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Changes that occur in aquaculture are influenced by feeding and water quality, causing changes in the composition, abundance, and structure of plankton communities. Therefore, the presence of plankton can be used as an indicator of aquaculture. The purpose of this study was to analyze the structure of plankton communities in freshwater crayfish farming in fiber ponds. For plankton retrieval techniques in this study were carried out every day at 06.00 for 14 days. A total of 50 liters of water is taken from each pond using a bucket, water collection in each pond is carried out at 5 different points and filtered using planktonet. The types of phytoplankton found in 3 fiber ponds consist of classes Bacillariophyceae, Chlorophyceae, Cyanophycae and Rotifers and consist of 13 species. This type of zooplankton consists of the class of rotifers and consists of 25 genera. The type of phytoplankton that most often dominates is found in Microc species. In zooplankton, the type that most often dominates is Branchiaonus. This makes Microcystis. and Branchiaonus. plays a high role in maintaining the sustainability of the ecosystem in fiber ponds. H' values range from 1.2 - 1.5 for E values range from 0.4 - 0.5 and D ranges from 0.3 - 0.5. This shows that the quality of LAT cultivation water is still relatively poor. It is characterized by low diversity and uniformity of plankton and indications of species dominance.

The South Coast of East Java is one of the areas that has marine and fisheries potential. This is utilized by local residents as a source of livelihood. To maximize this potential, it is necessary to know how the water quality in an area. The water quality of a water body can be known through the measurement of chlorophyll-a concentration and sea surface temperature with the help of remote sensing technology. This study aims to analyze the comparison of Aqua MODIS and VIIRS images on mapping chlorophyll-a concentration and sea surface temperature with the help of the SeaDAS application whose data is downloaded through the NASA oceancolor website. To map chlorophyll-a concentration and sea surface temperature, an analysis method using the most optimal mathematical model is needed. The results of the Aqua MODIS satellite image chlorophyll-a concentration research in the year (2020-2024) in the South Coast of East Java has an average of 0.24282 mg/m3, 0.19144 mg/m3, 0.51777 mg/m3, 0.37524 mg/m3, and 4.0542 mg/m3. The highest average chlorophyll-a concentration value of Aqua MODIS satellite imagery occurred in May 2024. This condition indicates that the water quality in the South Coast of East Java is low. While the chlorophyll-a concentration of VIIRS satellite images in the year (2020-2024) in the South Coast of East Java has an average of 0.23197 mg/m3, 0.31974 mg/m3, 0.19304 mg/m3, 0.38974 mg/m3, and 1.58583 mg/m3. The highest average chlorophyll-a concentration value of VIIRS satellite imagery occurred in May 2024. This condition indicates that the water quality in the South Coast of East Java is low.

In the world consequently, pollution of water has become a great concern, and with emphasis on the quality of water especially on those which originate from natural sources, with regard to water borne diseases and their causing pathogens. Some of the more familiar water borne pathogens include: aquatic or enteric bacteria such as Salmonella typhi, Shigella, Coliform bacteria; viruses; and Protozoa. Also relevant to diarrhea are rotavirus, astrovirus, adenovirus, norovirus, picobirnavirus, and enterovirus. This research work was done on a cross-sectional study basis over a period of four months, from April to October of the year 2022 at various water supply stations in Tikrit City, Salah Al-Deen province. Grab samples were taken from both the wells and the Tigris River to carry out microbiological processing and quality check in the laboratory. The samples used in this study included river and well water sources taken at the water treatment centers. Samples were collected at three points in the Tigris River and at three points from wells, although the points varied across the different sites. The findings were mainly secular for E. coli followed by P. aeruginosa and parasite such as Giardia cysts, and amoebic cysts.

Centella asiatica leaves contain active compounds such as alkaloids, flavonoids, saponins, and tannins, which are secondary metabolites. A sheet mask is a practical cosmetic facial treatment that does not require rinsing and is effective in moisturizing the skin. This study aims to determine the formulation of a sheet mask preparation. The ethanol extract of Centella asiatica leaves meets the physical quality evaluation criteria for the preparation. The experimental formulation method involves creating a sheet mask composed of various components including Centella asiatica leaf extract, glycerin, propylene glycol, xanthan gum, PEG-40 hydrogenated castor oil, nipagin, 96% ethanol, fragrance (Green tea), aquadest, sheet mask base, and foil bag. The research includes the characterization of the raw material, phytochemical screening of the extract, and formulation into sheet masks with concentrations of 2%, 4%, and 6%, followed by moisturizing testing using a skin analyzer. The evaluation of the preparation includes organoleptic tests, homogeneity, physical stability, viscosity, pH value, irritation testing, and hedonic testing. The characterization results show a water content of 3.46%, water-soluble extract content of 31.38%, ethanol-soluble extract content of 11.96%, total ash content of 8.41%, and acid-insoluble ash content of 1.09%. Phytochemical screening results show positive for alkaloids, flavonoids, saponins, tannins, and steroids. The study indicates that the ethanol extract of Centella asiatica can be formulated into a homogeneous and stable sheet mask preparation. The pH of the preparation meets the requirement with a value of 4.5-6.5, which is relatively safe for facial skin. The preparation does not cause irritation, with viscosity testing meeting the requirement of 250-1150 cp. The moisturizing test shows that a 6% Centella asiatica extract concentration provides the best moisturizing effect, and the most preferred formulation is F3 with a preference percentage of 38.12%. The average moisture values are F0 (Blank) 25.64%, F1 (2%) 33.26%, F2 (4%) 39.18%, and F3 (6%) 38.12%. Overall, it can be concluded that Centella asiatica extract can be formulated into a sheet mask with effective moisturizing capability for the facial skin.  

Crisis aquatic biodiversity is a critical environmental issue, triggered by human activities such as overfishing, pollution, and climate change, which have serious impacts on the stability of ecosystems and the climate change, which has serious impacts on the stability of ecosystems and the livelihoods of coastal communities. livelihoods of coastal communities. This research aims to examine community-based solutions in restoring degraded aquatic ecosystems, with a focus on the integration of sustainable aquaculture technologies and aquaponic systems. The methodology used was a comprehensive literature analysis of scientific articles, journals and relevant publications. The research findings show that sustainable fisheries management, habitat restoration, environmental education and awareness, implementation of environmentally education and environmental awareness, the application of environmentally friendly technologies, and the development of supportive policies are the main strategies for sustainable fisheries management. development of supportive policies are key strategies in improve conservation effectiveness. The implications of this research show that a community-based approach is not only effective for the conservation of aquatic biodiversity, but also provides practical guidance for policymakers and non-governmental organizations in designing and implementing community-based policy makers and non-governmental organizations in designing and implementing more holistic and effective ecosystem restoration programs that are more holistic and sustainable.                                                              

The ornamental fish business is experiencing quite rapid development and has promising economic prospects. Ornamental fish is one of the fishery commodities that has the potential to become an export commodity because ornamental fish originating from Indonesia are in great demand by the international market. The development of the ornamental fish market is increasing but is not followed by a sufficient number of ornamental fish breeders and the lack of regulation of marine ornamental fish exporters in Indonesia, can trigger exporters to over-exploit natural ornamental fish to meet the needs of the ornamental fish market which can result in several species of marine ornamental fish It is threatened with extinction and causes the destruction of coral reefs because several types of coral reefs have direct symbiosis with fish. This research uses qualitative research methods or field research depending on what happens in the field, in this case PT Agung Aquatic Marine. The data analysis used is qualitative descriptive data analysis with data collection techniques through observation, interviews and documentation. Based on sales data for ornamental Clownfish (Amphiprion Ocellaris) from 2022 to 2023, sales show that sales continue to increase. Meanwhile, Clownfish (Amphiprion Ocellaris) which experienced a decrease in orders from customers include Clownfish (Amphiprion Ocellaris) with size (S). This could be caused by the quality of the fish not matching the customer's taste. However, there are also Clownfish (Amphiprion Ocellaris) whose orders continue to increase every month, such as Clownfish (Amphiprion Ocellaris) with size (M) and Black Clownfish (Amphiprion Ocellaris). This is because these ornamental fish have good quality according to customer tastes. Direct marketing of Clownfish ornamental fish (Amphiprion Ocellaris) at PT Agung Aquatic Marine can be said to be effective because it has been able to achieve sales targets and company goals that have been previously set.

This research aims to find out the marketing mix strategy for ornamental fish to increase sales volume at PT Agung Aquatic Marine, Denpasar Bali. This research uses descriptive qualitative research and also uses SWOT analysis (Strength, Weakness, Opportunity, Threat). SWOT analysis is an analysis used to evaluate opportunities and threats in the external environment as well as the strengths and weaknesses of the company's internal environment. The results of this research show that an IFAS score of 2.87 indicates a strong internal position, an EFAS score of 2.59 shows that the company responds to existing opportunities in a good way and avoids threats in its industrial market. The Cartesian diagram shows the company's position in an aggressive state, which is very profitable for the company. The marketing strategy used by the company to increase sales is that the company maintains and utilizes quality and varied products so that market segmentation becomes wider or increases, maintains consumer trust by being consistent in the performance provided and actively communicating to create mutually beneficial agreements.

Grouper fish (Epinephelus sp.) is one of the popular marine fish species in the market in Indonesia and abroad in Southeast Asia, this fish has high economic value, good taste. Currently, the development of grouper aquaculture has been growing, so the seeds must be available continuously to meet the demand for seeds, therefore the foundation of interspecies crosses between groupers that have a high heterosis effect in growth traits, disease resistance and environmental resistance. This research activity was carried out at the Brackish Water Aquaculture Center located in Situbondo, East Java and was carried out from June 19, 2023 to August 19, 2023. The working method used in the Field Work Practice is descriptive method with data collection including primary and secondary. The technique of grouper hatchery conducted at the Brackish Water Aquaculture Fisheries Center stages include tub preparation, broodstock rearing, hybridization, hatching and egg stocking, larval development, feeding, water quality management, growth sampling and grading, pests and diseases, and harvesting and marketing. The results of the observed parameters are HR 73.25%, SR 15.98%, FR 74.16%. Water quality management carried out in grouper hatcheries is water reduction and water changes according to larval age, siphon once a week and water quality tests.    

The aquaculture sector is one source of food production whose development in Indonesia reached 6,979,750 tonnes or 95.80%. Therefore, it can contribute to the community's nutritional adequacy rate. Fisheries cultivation must be encouraged, because it plays an important role in improving the community's economy. Catfish production in Indonesia reached 1.06 million tons and 19,550 tons in Lampung. Catfish can be cultivated with various types of pools including tarpaulin, concrete, soil, biofloc and bucket pools. The aim of cultivating in buckets is as a form of updating appropriate technology through cultivating in buckets and creating nutritional gardens. The levels of ammonia, nitrite and nitrate in catfish ponds with plants will be lower than in conventional ponds without aquaponics. The experiment was conducted with a Completely Randomized Design (CRD) with four treatments and three replications (P1=1 head/liter, P2=2 head/liter, P3=3 head/liter and P4=4 head/liter). The best absolute weight growth rate was 3.1 grams, absolute length growth rate was 9.1 cm, and survival rate was 81%, accompanied by other water quality parameters such as temperature (26.5 - 28.4oC), pH (6.5- 6.8), DO (3-4 mg/L), TDS (135- 145 ppm).

This research aims analyse the chapter 2 Corinthians 6:14-15 in the Christian Scriptures and study itd implications in the context of marriage of interfaith coouples. This research uses the exegesis approach and theological analysis to gain a comprehensive understanding of the original text and historical context of the chapter. The original text of 2 Corinthians 6:14-15 is of Greek origin and emphasises the importance of aquality of beliefs in relationships, especially in the context of marriage. Interpretations of this text can vary depending on the theological tradition and Bible translation used, with some common interpretations including the prohibition against interfaith marriage and the admonition to choose friends, business partners or co-workers of the same faith. In the context of church theology and practice, this text can be used as a guide for individuals and couples in choosing, life partners of the same faith and maintaining equality of beliefs in relationships. This research is expected to provide useful insights for individuals, couples,as well as religious leaders in dealing with the challenges that arise in interfaith marriages.  

The tofu industry in Indonesia generally utilizes simple processing technologies, leading to unresolved wastewater management issues. Tofu wastewater contains high organic matter, measured by BOD, a parameter indicating the oxygen required by microorganisms to decompose organic matter. High BOD can decrease dissolved oxygen (DO) levels in water, which is crucial for aquatic life. This study investigates the effectiveness of local probiotics in reducing BOD and increasing DO in tofu wastewater (ABIT). Three treatments were applied: pure ABIT, neutralized ABIT (ABIT-N), and ABIT mixed with local probiotics in three ratios (1:1, 1:2, and 1:3). DO was tested at 0, 8, 16, 24, and 36 hours, while BOD was tested at 0 and 5 days. The results demonstrate that local probiotics can effectively reduce BOD and enhance DO levels in ABIT. The highest DO (3.36 mg/L) was observed in ABIT-N mixed with local probiotics at a 1:3 ratio after 32 hours. The most significant BOD reduction (135.77 mg/L) was also achieved at the 1:3 ratio. These findings suggest that local probiotics offer an eco-friendly approach to treating tofu wastewater.  

Oceanarium s are popular tourist destinations in Indonesia.  This article discusses digital transformation in designing the latest Oceanarium. The research method involves surveys and observations to 2 major Oceanarium locations in Jakarta, one Oceanarium in Singapore and one in Bangkok's Siam Paragon, to get an overview of operations, and the implementation of digital technology. In addition, this research also integrates the author's experience as a public aquarium designer and for 20 years as a manager in one of the public aquariums in the Jakarta area. The current approach needs to involve the integration of IoT technology for aquatic environment monitoring, smart energy management system. The results show that the implementation of interactive technology in several places can create an interesting and memorable learning experience for visitors. One of the technologies that is interesting and preferred by visitors is the use of hologram technology, visitors can feel the sensation of being in the sea and interact with marine animals in a realistic virtual environment. This enhances their understanding of marine flora and fauna and the importance of preserving the marine environment. This digital transformation not only improves the operational efficiency of the Oceanarium, but also enriches the visitor experience through the application of interactive technology. By implementing this strategy, Oceanarium s in Indonesia are expected to continue to grow, make a positive contribution to the preservation of the marine environment, increase public knowledge of marine biology, and provide a high-quality experience for visitors.

Environmental pollution has become a serious problem in the world, including in Indonesia. Tofu waste is waste from processing soybeans and consists of solid and liquid waste. Solid waste in the form of dirt left over from cleaning is usually called tofu dregs, while liquid waste is water resulting from washing tofu. Industry knows that disposing of waste directly into water bodies can pollute those waters, because it can lower the pH of the air and affect aquatic biota. Therefore, the industry knows that it must carry out processing first to prevent environmental problems. In this study, researchers used commercial probiotic bacteria to reduce BOD and COD levels in tofu wastewater. The research was carried out by testing in the laboratory and using statistical data with graphic methods which can provide a comparison of the water content of tofu waste before and after it was given. The action given in the research was a ratio of 1:1, 1:2 and 1:3 water to tofu waste with commercial probiotic bacteria. Apart from that, researchers also added incubation times within each 8 hour interval, namely at 0 hours, 8 hours, 16 hours, 24 hours and 32 hours. The results of the research show that administering commercial probiotics can reduce BOD and COD levels in tofu wastewater. The most significant reduction occurred in a ratio of 1:3 in COD and BOD to 242.69 mg/lt and 148.00 mg/lt with an incubation time of 32 hours. This proves the commercial effect of probiotic bacteria to reduce BOD and COD levels so that it can help reduce environmental pollution, especially in the air.      

Brand image is a very important factor in marketing management, the influence of brand image on purchasing decisions by considering the role of consumer satisfaction as a mediator, if the brand image of a company is strong it will increase consumer satisfaction, which in turn will influence consumer purchasing decisions. The formulation of the problem in this research is whether brand image influences purchasing decisions, whether brand image influences consumer satisfaction, whether consumer satisfaction influences purchasing decisions, whether consumer satisfaction can mediate the relationship between brand image and purchasing decisions. This research is quantitative research, the population in this research is students of the Faculty of Febi Uin Raden Intan Lampung. The sample used in this research was 100 respondents. Data collection uses a questionnaire. The data analysis technique used in this research is the SEM model using SmartPLS version 3.0. The research results obtained directly from each variable are that brand image has a positive and significant effect on purchasing decisions, brand image has a positive and significant effect on consumer satisfaction, consumer satisfaction has a positive and significant effect on purchasing decisions. And for the test results passing the mediating variable, it was found that consumer satisfaction was able to mediate the influence of brand image on purchasing decisions through partial mediation.    

Indonesia's 2.5 million hectares of coral reefs include 569 species, or about 67% of the world's 845 coral species. One of the companies engaged in the export business of ornamental corals is PT Agung Aquatic Marine located in Bali province. This study aims to determine the costs, revenues and marketing margins of ornamental coral export business at PT Agung Aquatic Marine, Denpasar Bali. This research uses descriptive quantitative. Data analysis used is income analysis, marketing margin and marketing efficiency. The results showed that the costs incurred amounted to Rp2,472,069,157 so that the revenue earned was Rp822,355,543, There are two types of marketing margins used in the sale of ornamental coral euphyllia type, the first from fishermen to exporters and then to consumers which totaled Rp2,078,202, while the second from suppliers and then to exporters after that to consumers amounting to Rp2,017,637. The efficiency level of Marketing channel I is 13.1% and marketing channel II is 5.7%. So it can be seen that obtaining high margins and profits is Marketing channel I. While the one with the most efficient marketing is Marketing channel I. While the one with the most efficient marketing is Marketing Channel II.

Technological advances in the industrial era 4.0 mean that various things must prioritize convenience and efficiency in carrying out daily work such as carrying out automatic maintenance and control in the home. This has made many people able to produce various forms of technology that can be controlled automatically and help with work. people who can't take up much time. OT is a technology built to provide ease of work that can be connected to each other using the internet. One use of IoT technology is in the household sector to feed ornamental fish according to need and monitor remaining feed. This tool is designed for NodeMCU as control and an internet connection that is integrated with the Blink application. This tool consists of an HC-SR04 sensor input and a DS3231 RTC timer. The output of this tool uses a servo motor to open and close the contents of the fish feed. Arduino IDE software is used in NodeMCU coding and the Blynk application is used to connect the smartphone and NodeMCU. Based on the results of testing carried out, the system success rate has an average of 95% success. Meanwhile, the average delay is 0.052367 milliseconds.    

This study aims to identify the factors influencing delays in the claim process of theRetirement Savings Scheme (JHT) at the BPJS Employment Branch Office in Medan. Aqualitative approach was employed through in-depth interviews with BPJS employees,rticipants,andbranch managers.The findingsrevealthatinternalfactorssuch asincomplete documentation, human resource limitations, and technological system disruptionsplay a significant role in causing claim delays. Additionally, external factors includingsuddengovernmentregulatorychangesand inadequateparticipantinformation alsocontribute to these delays. The impact of claim delays on participant satisfaction is profound,necessitating improvements in claim management administration. Based on these findings, itis recommended to enhanceparticipant education and awareness, strengthen humanresources, improve technological system reliability, and develop adaptive mechanisms forregulatory changes to enhance efficiency and participant satisfaction in the JHT claimprocessattheBPJS EmploymentBranchOfficein Medan

This study aims to explore the role of marine fisheries students in the hotate aquaculture internship program at the Hotate Business Fishery Cooperative Association in Japan. This internship program is designed to provide practical experience and in-depth knowledge of the hotate aquaculture industry, one of the important fisheries sectors in Japan, especially in Hokkaido. Students who participate in this program are directly involved in various aspects of hotate cultivation, including seed selection, environmental maintenance, catching, processing, and distribution. This study uses a qualitative method with in-depth interviews and participatory observation to collect data from participating students, mentors, and program managers. The results of the study showed that participation in the internship program provided significant benefits for students, including improved technical skills, an understanding of best practices in hotate farming, and the ability to adapt to modern technologies and methods in the fishing industry. In addition, the program also strengthens the relationship between educational institutions and industry, as well as opens up career opportunities for students in the global fisheries sector.This study concludes that the internship program at the Hotate Business Fishery Cooperative Association has an important role in developing quality and competitive human resources in the fishing industry, as well as contributing to sustainability and innovation in hotate cultivation in Japan.

The blue economy has the principle of sustainable management in various sectors between the ocean and the coast. The blue economy emphasizes economic growth and frames the sea and coast as a space for development. This research aims to identify and analyze key variables in environmental and economic aspects in the development of the blue economy in Patutrejo Village, Purworejo Regency. This research uses a mix method approach to achieve research objectives with interviews and analysis using ISM (Interpretive Structural Modeling). The results of this research show that there are three blue economy sectors, including aquaculture, beach tourism and commodity processing. The research results indicate that water conservation and increasing opportunities for the tourism industry are key variables for developing the blue economy

Macrozoobenthos is a group of benthic organisms measuring more than 1 mm that plays a crucial role in the process of decomposition and mineralization of organic material in aquatic ecosystems. The purpose of this observation was to determine the ecological index and density of macrozoobenthos in Pengudang and Dompak Waters. This observation was conducted from May 26-27, 2024 in the waters of Pengudang and Dompak using the survey method. Determination of sampling points is done by random sampling of 20 points each line transect. Macrozoobenthos measurements using 1x1m quadrant transect. The results showed that Pengudang waters had a higher species density with an average value of 13 (medium) compared to Dompak with an average of 0.03 (low). The diversity index ranged from 0.36-1.05, with Pengudang showing higher values. The uniformity index in Pengudang was 0.50 (medium), and in Dompak 0.17 (low). The dominance index was higher in Dompak (0.84) than Pengudang (0.40). Water quality parameters showed that temperature, salinity and pH were within safe limits, but TSS values in Dompak exceeded quality standards, indicating higher sedimentation levels.